Only company in the world who is authorized to work on and service the Ford GT supercar transmission

Only company in the world to achieve CARB legality when tuning a forced induction application through a factory NISSAN ECU

We Know Cars

From our sales and customer service team, who are enthusiast themselves, to our in-house research and development team to our in-house installation center we are constantly testing and developing new products and working with other industry manufacturers to improve their products. These resources allow our Customer Support teams to be the most highly experienced team around.

Racing Heritage

STILLEN's founder, Steve Millen, enjoyed a wildly successful, multi-decade racing career in which he earned several titles including:

2 time IMSA world champion

2 time Mickey Thompson off-road champion

24 hours of Le Mans class winner

24 hours of Daytona overall winner

12 hours of Sebring overall winner

Winningest driver in IMSA GT history

Today, you can find Steve within the STILLEN campus overseeing new product development, checking in on the progress of installs being done in the service shop, discussing which new vendors to offer our customers and more.

Made in the USA

We design and manufacturer all STILLEN parts in our Southern California based campus, which consists of several warehouses and manufacturing plants that span over 100,000 sq. ft. and allow us to manufacture CNC machined, fabricated tube and sheet metal, and carbon fiber products in-house. To see our capabilities for yourself, stop by for a tour the next time you're in the Southern California area!

Choose from Thousands of Parts

STILLEN manufacturers thousands of products across a variety of vehicle platforms and works with hundreds of vendors to bring you the best selection of parts for your vehicle.

Low Price Guarantee

Bring us any advertised price for a product that we carry and we'll do our best to beat it. We believe that our customers deserve the best price possible for the products they buy, so our team is dedicated to giving you the best possible deal. Always make STILLEN your last stop for maximum savings and excellent customer service.

Manufacturer

Steve Millen Sportparts, Inc. and STILLEN humbly started their race to the front of the pack in 1986. Starting with aftermarket mini-truck appearance packages, we quickly found ourselves fulfilling customer's requests to build products for other vehicles such as vans and full-sized trucks.
With that came performance parts, suspension pieces, and upgraded brake products such as big brake systems. Capitalizing on his racing career, and knowing what it took to make sports cars perform like no other, it was only natural for Steve Millen to branch out into the import car scene. Over two decades later, we offer a full array of products encompassing styling, performance, handling, and braking products for just about any car, truck, or SUV.